《Journal of Oral and Maxillofacial Surgery》 ›› 2013, Vol. 23 ›› Issue (1): 32-36. doi: 10.3969/j.issn.1005-4979.2013.01.007

• Clinical Study • Previous Articles     Next Articles

Imaging Modalities for Assessment of the Position of MTM and Mandibular Canal

QIAN Wen-tao, ZHANG Ying   

  1. Department of Oral and Maxillofacial Surgery, the Ninth People′s Hospital, School of Medicine,
    Shanghai Jiaotong University,Shanghai Key Laboratory of Stomatology,Shanghai 200011, China
  • Online:2013-02-28 Published:2013-05-08

下颌管及其分支与下颌第三磨牙关系的影像学观察

钱文涛,张瑛   

  1. 上海交通大学医学院附属第九人民医院口腔外科,上海市口腔医学重点实验室,上海 200011
  • 通讯作者: 张瑛,教授. E-mail: jyzy0127@126.com
  • 作者简介:钱文涛(1985—),男,江苏人,住院医师,硕士. E-mail: wentaoq@gmail.com
  • 基金资助:

    上海市科学技术委员会资助项目(08DZ2271100)

Abstract:  Objective: To observe the applied anatomy of mandibular canal(MC) and braches in mandibular third molar(MTM) region by CBCT and panoramic radiography. Methods: 179 patients with 216 MTMs undertaken panoramic radiography and CBCT were retrospectively reviewed. Yamada classification was used to record the anatomic relationship of MC and MTM. Result: 4 cases with branch of mandibular canal were detected in panoramic radiographs and 18 cases with branch were detected by CBCT. There were 8 cases in type A, 6 cases in type B, 2 cases in type C, and 6 cases in type D. Meanwhile, there were 7cases that branches located at the buccal side of third molar, 6 cases at the lingual side, and 9 cases below the root of third molar. Conclusion: When we want to bring the important anatomical structures into view, CBCT 3-D images are useful and better than panoramic radiography.

Key words: mandibular canal, mandibular canal branches, mandibular third molar, panoramic radiographs, CBCT

摘要: 目的: 利用椎形束CT(CBCT)及全景片观察下颌管及其分支在下颌第三磨牙区域的情况。方法:对179名患者的216颗第三磨牙进行CBCT及全景片检查。在全景片及CBCT上观察下颌管及其分支在第三磨牙区域走向及与第三磨牙的关系。结果:全景片上观察到有4例下颌管有分支,CBCT观察到有22例有分支;下颌管分支与第三磨牙的关系:A类有8例,B类有6例,C类有2例,D类有6例,其中,分支位于第三磨牙颊侧的有7例,舌侧的有6例,位于第三磨牙牙根下方的有9例。结论:利用CBCT可以对下颌管及下颌第三磨牙的空间位置进行更好地观察。CBCT对下颌管分支有更高的检出率。

关键词: 下颌管; 下颌管分支; 下颌第三磨牙; 全景片, 椎形束CT(CBCT)

CLC Number: